Writing & History. History is impossible without the written word as one would lack context in which to interpret physical evidence from the ancient past. Writing records the lives of a people and so is the first necessary step in the written history of a culture or civilization.
Lesson Summary. In review, chemical energy is energy stored in chemicals'. Energy is 'the ability to do work. Chemical energy is a type of potential energy that is energy due to the position of an object or objects.
Chemical Energy. Chemical energy is one of the many forms of energy that exist in the universe around us. Chemical energy can be released of absorbed during a chemical reaction. In order for a chemical reaction to occur, a substance or substances must change into new substances with different properties.